Wheelchair backrest
CA 2106361 C · Owner: Harrison, Patrick N. · Inventors: Medjedovic, Nenad B.; Jensen, Finn Hoj; Harrison, Patrick N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a backrest having first and second couplings for attaching the backrest to a pair of spaced apart uprights. The backrest is suspended, from the first couplings and is located longitudinally by the second couplings which, simply engage the uprights and do not require parts to be added to the uprights. The, invention also provides a backrest including a tilt mechanism operable to tilt the, backrest about the second couplings while reacting with the first couplings to change, the location of the backrest relative to the first couplings. Adjustable side supports are, also provided.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 16, 1993 and granted November 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.